One of the main challenges within the development of a passenger airbag restraint system is still the functional integration of the airbag into the instrument panel. The need for continued standardization in this highly competitive market even increased this challenge during the recent years because the same module has to be able to work in different IP designs. On the other hand this challenge is also driven by a lack of possibilities to predict the interaction of both parts until they are tested in the subsystem with production intended parts. There has been a lot of advances in the numerical simulation during the last years which improved the development of airbags and IPs, but it has to be taken into account that simulation results are only as good as the model validation is and that the degree of detail in most simulation models that are available so far is still not adequate for this purpose. The paper describes a new measurement method, which is able to identify the main effects during the IP opening of complex, multi layer covers. This measurement method provides the necessary background information to enable the validation and the use of an easy to adapt cover simulator in "module only" deployment tests. This simulator, which is also described in the paper, is able to represent a given opening behavior thus allowing the validation of a passenger module with an IP representation. The new method is also able to significantly improve the numerical simulation models of the airbag/IP interaction. With this set of information (IP-opening behavior and Airbag validation with the expected opening force) both components can be developed rather independently, but taking the subsystem situation already into account in a very early development phase. In the long run, the IP representation and the IP opening force measurement can even be included into the component specification to ensure the components are chosen under the right assumptions. Precondition for this is, that all involved development partners (i. e. Airbag suppliers, IP suppliers, OEM's) will use the same test methodology to be able to compare the results. The intension of this paper is to further facilitate such a cooperation by proposing adequate methods & development tools.


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    Titel :

    New tools for the measurement and simulation at the interface between the passenger airbag and the instrument panel


    Beteiligte:
    Kippelt, Ulrich (Autor:in) / Maier, Alexander (Autor:in) / Büttner, Jörg (Autor:in) / Mirones, Ramon (Autor:in)


    Erscheinungsdatum :

    2012


    Format / Umfang :

    7 Seiten, 6 Bilder


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





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